Roller drive end and method for mounting the same

Abstract

This invention relates to a drive end of a roller for producing and/or treating a material web, in particular a paper web or paperboard web, the drive end including a hollow-cylinder-shaped roller casing and a drive journal which is connected to the roller casing in order to drive said casing. The drive journal stands in a driven connection to a drive unit or can be switched into such a driven connection. The drive journal has an axial bore in the direction of the axis of rotation of the roller, said bore extending from an outer end face of the drive journal to an inner end face of the drive journal inside the roller casing. Provision is made on the outer end face of the drive journal for a drive flange by way of which a drive torque can be transmitted onto the drive journal. The drive flange has a tensioner or is connected to such a tensioner, which extends through the axial bore of the drive journal and is tensioned against the inner end face such that it tensions the drive flange against the outer end face or tensions it friction-locked and/or form-locked in the region of the outer end face of the drive journal.

1 . A drive end of a roller for at least one of producing and treating a material web, said drive end comprising: 
 a hollow-cylinder-shaped roller casing;    a drive unit;    a drive journal which is connected to said roller casing in order to drive said roller casing, said drive journal including an outer end face and an inner end face, said drive journal one of standing in a driven connection to said drive unit and being configured for being switched into said driven connection, said drive journal having an axial bore in a direction of an axis of rotation of the roller, said axial bore extending from said outer end face of said drive journal to said inner end face of said drive journal inside said roller casing; and    a drive flange on said outer end face of said drive journal, said drive flange configured for transmitting a drive torque onto said drive journal, said drive flange one of including a tensioner and being connected to said tensioner, said tensioner extending through said axial bore of said drive journal and being tensioned against said inner end face such that said tensioner one of tensions said drive flange against said outer end face and tensions said drive flange at least one of friction-locked and form-locked in a region of said outer end face of said drive journal.    
   
   
       2 . The roller drive end according to  claim 1 , further including a bearing, wherein said drive journal is mounted in said bearing and carries said roller casing.  
   
   
       3 . The roller drive end according to  claim 2 , wherein said bearing is a rolling bearing.  
   
   
       4 . The roller drive end according to  claim 2 , wherein said drive unit includes a rotor, said drive flange connected to said rotor of said drive unit.  
   
   
       5 . The roller drive end according to  claim 4 , wherein said drive flange is connected to said rotor of said drive unit using a bolted flange joint.  
   
   
       6 . The roller drive end according to  claim 4 , wherein said drive flange is integral with said rotor of said drive unit.  
   
   
       7 . The roller drive end according to  claim 4 , wherein said drive unit includes a stator which encloses said rotor in a circumferential direction from an outside, said stator being braced one of by using an anti-torsion torque arm against said bearing and by using a support carrying said bearing, a plurality of bracing forces being dissipated respectively into one of said bearing and said support.  
   
   
       8 . The roller drive end according to  claim 7 , wherein said plurality of bracing forces one of in a plane of an axial center of said bearing and offset therefrom are dissipated respectively into one of said bearing and said support.  
   
   
       9 . The roller drive end according to  claim 2 , wherein said drive flange has in a region axially outside said outer end face of said drive journal an outer diameter which is one of equal to and smaller than an outer diameter of said drive journal in a region of an axially outer end of said drive journal on which said drive journal is mounted in said bearing.  
   
   
       10 . The roller drive end according to  claim 2 , wherein said bearing is a toroidal roller bearing.  
   
   
       11 . The roller drive end according to  claim 1 , wherein said tensioner is tensioned one of by using a pressure plate against said inner end face of said drive journal and by using a cylinder cap connected to said drive journal.  
   
   
       12 . The roller drive end according to  claim 11 , further comprising a tensioning device, wherein said tensioner includes an axial end, said pressure plate including a bore through which said tensioner is passed with said axial end, said axial end of said tensioner being equipped with a male thread which carries said tensioning device with a corresponding female thread, said tensioning device bracing itself against said pressure plate and being configured for tensioning said tensioner.  
   
   
       13 . The roller drive end according to  claim 12 , wherein said tensioning device is a nut.  
   
   
       14 . The roller drive end according to  claim 1 , wherein said drive flange is at least one of wedged against said drive journal and pinned to said journal.  
   
   
       15 . The roller drive end according to  claim 1 , wherein said drive journal includes an outer casing surface, said drive flange being tensioned in a friction-locked connection against a hole cavity of said axial bore, against said outer end face of said drive journal, and from an outside against said outer casing surface of said drive journal.  
   
   
       16 . The roller drive end according to  claim 1 , wherein said drive flange has no axial threaded connection to said outer end face of said drive journal and has no axial threaded connection to said drive journal except for a tensioning threaded connection of said tensioner.  
   
   
       17 . The roller drive end according to  claim 1 , wherein said drive flange is a single piece with said tensioner and a tensioning of said drive flange on said drive journal is effected solely by using one of two and three components.  
   
   
       18 . A method for mounting a drive end of a roller for at least one of producing and treating a material web, said method comprising the steps of: 
 providing the drive end which includes: 
 a hollow-cylinder-shaped roller casing;  
 a drive unit;  
 a drive journal which is connected to said roller casing in order to drive said roller casing, said drive journal including an outer end face and an inner end face, said drive journal one of standing in a driven connection to said drive unit and being configured for being switched into said driven connection, said drive journal having an axial bore in a direction of an axis of rotation of the roller, said axial bore extending from said outer end face of said drive journal to said inner end face of said drive journal inside said roller casing;  
 a drive flange on said outer end face of said drive journal, said drive flange configured for transmitting a drive torque onto said drive journal, said drive flange one of including a tensioner and being connected to said tensioner, said tensioner extending through said axial bore of said drive journal and being tensioned against said inner end face such that said tensioner one of tensions said drive flange against said outer end face and tensions said drive flange at least one of friction-locked and form-locked in a region of said outer end face of said drive journal, the roller being a drying cylinder of a paper machine; and  
 one of a steam head and a siphon of a steam pipeline system for directing steam into said drying cylinder being arranged in said axial bore of said drive journal; and  
   removing one of said steam head and said siphon; and    arranging said tensioner in its place.    
   
   
       19 . A method for converting a non-driven journal of a roller for at least one of producing and treating a material web into a drive journal on a drive end, said method comprising the steps of: 
 inserting a tensioner into an axial bore at least one of: 
 of the journal, said axial bore being an existing said axial bore of the journal;  
 after one of newly adding said axial bore to the journal and adapting an existing said axial bore;  
 after replacing the journal with the drive journal including said axial bore; and  
 after one of arranging an additional drive journal on the journal and connecting said additional drive journal to the journal,  
   wherein the drive end includes: 
 a hollow-cylinder-shaped roller casing;  
 a drive unit;  
 the drive journal which is connected to said roller casing in order to drive said roller casing, the drive journal including an outer end face and an inner end face, the drive journal one of standing in a driven connection to said drive unit and being configured for being switched into said driven connection, the drive journal including said axial bore in a direction of an axis of rotation of the roller, said axial bore extending from said outer end face of the drive journal to said inner end face of the drive journal inside said roller casing; and  
   a drive flange on said outer end face of the drive journal, said drive flange configured for transmitting a drive torque onto the drive journal, said drive flange one of including said tensioner and being connected to said tensioner, said tensioner extending through said axial bore of the drive journal and being tensioned against said inner end face such that said tensioner one of tensions said drive flange against said outer end face and tensions said drive flange at least one of friction-locked and form-locked in a region of said outer end face of the drive journal.